Cap for a container



FIG. 1 is a top view of the cap for a container;

FIG. 2 is a side view of the cap for a container;

FIG. 3 is a bottom view of the cap for a container; and,

FIG. 4 is a perspective view of the cap for a container.

The broken line showing threadings within the cap bottom is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a cap for a container, as shown and described. 